A detailed guide with information and photographs featuring the 85 currently recognized species of whales, dolphins and porpoises collectively known as 'cetaceans'. This guide is up-dated regularly with the latest information.

National Oceanic and Atmospheric Administration

Guides to cetaceans (whales, dolphins and porpoises) and pinnipeds (seals, sea lions and walruses) of the Northeast United States. NOAA is a federal agency focused on the condition of the oceans and the atmosphere.